license of support files for bug 154602

[jay ball]

bug number http://bugzilla.mozilla.org/show_bug.cgi?id=154602 concerns 
adding optional smiley :-) support to bugzilla.  in the process of 
creating this patch, i need to obtain smileys from various sources and 
bring them into the bugzilla source tree.  i obtain these outside 
images since i'm no artist.

right now, there is no way we can use the images contained within the 
current patch, so they need to be replaced with something else.

some of the possible replacement candidate images are under the GPL, 
but as far as i can tell, bugzilla is licensed under MPL.  so, can GPL 
images be brought in without changing the license of the whole source 
tree?

public domain images are not a problem i assume.  we just mark them as 
such, right?

is bugzilla going to change to the MPL/GPL/LGPL tri-license like 
netscape?

in all cases, i should get permission of the image authors to place the 
images under whatever license bugzilla uses and that this license may 
change as bugzilla evolves.

assuming these issues get resolved, can we see smileys in v2.18?  ;-)

-j